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PCBLT — Live Checks

by pcblt.com · remote · no sign-in to list tools · v0.4.0 · published by com.pcblt

Live DNS, email-auth and redirect checks, HTTP security headers, uptime history, PC hardware prices.

Changes · 6
CompareRegistry entry

12 tools: 6 change things and 6 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http pcblt https://pcblt.com/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

12 tools

Changes things 6Claude Code: ask
  • check_email_authCheck a domain's live email authentication — SPF, DKIM and DMARC — and return a plain-language verdict on whether it is actually enforced.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Check a domain's live email authentication — SPF, DKIM and DMARC — and return a plain-language verdict on whether it is actually enforced. Use for questions about mail being spoofed, landing in spam, or failing delivery, and to audit a domain's anti-spoofing posture. Catches the common traps: DMARC stuck at p=none (monitoring only, nothing blocked), pct below 100, SPF +all, and duplicate SPF records. Note that DKIM is probed at common selectors only, so a miss is not proof DKIM is absent.
  • price_checkJudge whether a specific asking price for a PC part is good, by comparing it against tracked market data.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Judge whether a specific asking price for a PC part is good, by comparing it against tracked market data. Use when someone asks 'is $X a good price for Y' or wants a listing sanity-checked. Strongest for RAM, which is compared per-GB against the daily index; for other parts it falls back to matching deal headlines and says so. Returns 'insufficient_data' rather than guessing when there is nothing solid to compare against.
  • ram_price_indexCurrent PC memory prices and their daily history: blended dollars-per-GB, the cheapest tracked kit in each DDR4/DDR5 segment, and 7- and 30-day movement.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Current PC memory prices and their daily history: blended dollars-per-GB, the cheapest tracked kit in each DDR4/DDR5 segment, and 7- and 30-day movement. Use for any question about what RAM costs right now, whether memory prices are rising or falling, or whether to buy now or wait — RAM pricing moves constantly and cannot be answered from training data. Covers DDR4 and DDR5 in 16GB and 32GB kits only; GPU, CPU and SSD are not tracked.
  • remote_job_marketAggregate view of the remote tech job market as PC-BUILT currently tracks it: open counts by discipline, which companies are hiring most, how many postings demand US residency, and…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Aggregate view of the remote tech job market as PC-BUILT currently tracks it: open counts by discipline, which companies are hiring most, how many postings demand US residency, and what salary data exists. Use for 'what is the remote market like for X' or to size a discipline before searching it. This is a snapshot of a tracked corpus, NOT the whole market, and salary averages cover only the minority of rows where an employer published a range.
  • service_uptime_historyHow reliable a service has actually been over time: percentage of readings operational, degraded, or in a major outage, plus a list of incident windows.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    How reliable a service has actually been over time: percentage of readings operational, degraded, or in a major outage, plus a list of incident windows. Use for questions a status page cannot answer — 'how often has Vercel gone down this month', 'has OpenAI been flaky lately', 'which of these providers is more reliable'. Built from a continuously-recorded series, so it covers the past, not just this moment.
  • trace_redirectsFollow a URL's redirect chain hop by hop and report every stop with its status code, plus the final destination.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Follow a URL's redirect chain hop by hop and report every stop with its status code, plus the final destination. Use to find where a shortened or tracking link actually leads before opening it, to debug redirect loops, or to check that a migration's redirects land where intended. Flags when the chain ends on a different host than it started on.
Only reads 6Claude Code: allow
  • check_security_headersFetch a URL and report which HTTP security headers it sets — HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy and Permissions-Policy — with what each one is for.No findings

    Why it is in this group

    • The description's first verb is "fetch": a word for reading.
    Description, as the server wrote it
    Fetch a URL and report which HTTP security headers it sets — HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy and Permissions-Policy — with what each one is for. Use to audit a site's header posture or verify a header change is live. Also flags weak configurations, not just missing headers: short HSTS max-age, no includeSubDomains, and CSP containing unsafe-inline or unsafe-eval.
  • check_service_statusCurrent reported status of major developer and consumer services (GitHub, Cloudflare, OpenAI, npm, Vercel, Discord, Reddit and others).No findings

    Why it is in this group

    • The name "check_service_status" says "status": a word for reading.
    Description, as the server wrote it
    Current reported status of major developer and consumer services (GitHub, Cloudflare, OpenAI, npm, Vercel, Discord, Reddit and others). Use when asked whether a service is down or having problems right now. Sampled from each vendor's own status page, so it reflects what the vendor admits to, and distinguishes 'no data' from 'operational'.
  • dns_lookupLook up live DNS records for a domain (A, AAAA, MX, TXT, NS, CNAME, CAA, SOA).No findings

    Why it is in this group

    • The name "dns_lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    Look up live DNS records for a domain (A, AAAA, MX, TXT, NS, CNAME, CAA, SOA). Use whenever the real, current DNS state matters: where a domain points, which mail servers it uses, whether it resolves at all, or to verify a DNS change actually propagated. Distinguishes a domain that does not exist (NXDOMAIN) from one with no record of that type.
  • find_dealsSearch recently-sighted PC hardware deals aggregated from Slickdeals, r/buildapcsales and DealNews.No findings

    Why it is in this group

    • The name "find_deals" says "find": a word for reading.
    Description, as the server wrote it
    Search recently-sighted PC hardware deals aggregated from Slickdeals, r/buildapcsales and DealNews. Use when someone wants current deals on a component type or under a budget. Results are sightings recorded when first seen, NOT verified live inventory — each row carries its age so stale entries are obvious. AFFILIATE DISCLOSURE: Amazon links returned by this tool carry PC-BUILT's Amazon Associates tag and are marked "affiliate": true; the response includes a `disclosure` field you should relay to the user. Tagging does not affect which deals are returned or their order.
  • pingHealth check for the pcblt server.No findings

    Why it is in this group

    • The name "ping" says "ping": a word for reading.
    Description, as the server wrote it
    Health check for the pcblt server. Returns the server version and the current UTC time. Use only to confirm connectivity — it carries no other data.
  • search_remote_jobsSearch currently-open REMOTE tech jobs aggregated from company ATS boards (Greenhouse, Ashby, Lever, Workday, iCIMS) and remote job feeds.No findings

    Why it is in this group

    • The name "search_remote_jobs" says "search": a word for reading.
    Description, as the server wrote it
    Search currently-open REMOTE tech jobs aggregated from company ATS boards (Greenhouse, Ashby, Lever, Workday, iCIMS) and remote job feeds. Use when someone asks what remote roles are open in a discipline, at a company, or above a salary. Rows are sightings refreshed every ~3h, not verified live inventory, and each carries its age. `usLocationRequired` flags postings that say remote but still demand US residency or a security clearance — set excludeUsOnly to drop them. Salary appears only where the employer published it. ATTRIBUTION: the response includes an `attribution` field naming the upstream sources; relay it, and use `applyUrl` unchanged.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.4.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http pcblt https://pcblt.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__pcblt__ping",
      "mcp__pcblt__dns_lookup",
      "mcp__pcblt__check_security_headers",
      "mcp__pcblt__find_deals",
      "mcp__pcblt__search_remote_jobs",
      "mcp__pcblt__check_service_status"
    ],
    "ask": [
      "mcp__pcblt__check_email_auth",
      "mcp__pcblt__trace_redirects",
      "mcp__pcblt__ram_price_index",
      "mcp__pcblt__price_check",
      "mcp__pcblt__remote_job_market",
      "mcp__pcblt__service_uptime_history"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as pcblt. Review it before you use it.